@article{DAN_1974_218_6_a7,
     author = {V. G. Korneev},
     title = {Theorem on the positive definiteness of a differential operator in the theory of thin nonsloping shells},
     journal = {Doklady Akademii Nauk},
     pages = {1291--1293},
     year = {1974},
     volume = {218},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1974_218_6_a7/}
}